condition	mean	min	max
4 h after light	18.695149999999998	18.4702	18.9201
8 h after light	22.032600000000002	20.7897	23.2755
12 h after light	19.20365	18.0247	20.3826
4 h after dark	43.2312	37.6935	48.7689
8 h after dark	21.9146	19.8203	24.0089
12 h after dark	22.2588	21.0572	23.4604